Polythiols and use as epoxy resin curing agents
US4879414A · kind A · utility
8Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1988 |
| Grant date | Nov 7, 1989 |
| Priority date | — |
| Expiry date | Feb 17, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polythiols prepared by the reaction of hydrogen sulfide or organic dithiols with polyglycidyl substituted amines have been found to be outstanding curing agents for epoxy resins. Epoxy resins cured with these polythiols are characterized by not only improved gel times, but also improved cure rates, better heat resistance and greater resistance to absorption of water. A useful polythiol is the reaction product of N,N,N',N'-tetraglycidyl-m-xylylenediamine with hydrogen sulfide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.